Define Mesh Controls

Use the Mesh Controls tool to define regions with a user-defined volume element size.

All other mesh controls in the model are defined relative to the far field size and must be a power of 2 of the far field size. For example, if you define a far field mesh size of 1 m, the available refinement sizes will be 0.5 m, 0.25 m, 0.125 m, etc.

Far Field Element Size

  1. From the Setup ribbon, click the Mesh Controls tool.
    Figure 1.
  2. From the secondary tool set, click the Far Field tool.
    Figure 2.
  3. Verify the element size is set to 0.192 m.

Transition Layers

  1. From the Setup ribbon, click the Advanced Meshing Parameters tool.
    Figure 3.
    The ultraFluidX Mesh Controls Dialog opens.
  2. Set the value of General > Refinement level transition layers to 8.
    This instructs the solver to ensure that each resolution layer is at least eight levels thick.
  3. Close the ultraFluidX Mesh Controls dialog.

Offset Refinement Zones

As opposed to the Box tool, which creates a box-shaped refinement zone, the mesh refinement patterns of the Offset tool follow the contour of the body itself. This creates refinement around the body where it is needed most, eliminating unnecessary refinement that may result from a box-shaped zone.

Body

  1. From the Setup ribbon, click the Mesh Controls tool.
  2. From the secondary tool set, click the Body Offset tool to create an offset zone around all parts identified as Body, Wheel, Fan, and Heat Exchanger.
  3. Select a point on the model body.
    The Offset Tool micro-dialog opens.
  4. From the Offset Tool micro-dialog, use the drop-down menu to change the method from Distance to Layers.
  5. Set Layers to 12 and Level to 6.
    Tip: You can also change the distance or number of layers by interactively dragging the slider in the modeling window.
  6. From the Property Editor, rename the offset by setting the value of General > Name to RL06_Offset.

Parts

  1. From the Model Browser, multi-select all parts within the Main > Body_Exterior and Main > Underbody > RL07 assemblies. Press I on your keyboard to isolate the selected parts.
  2. From the Setup ribbon, click the Mesh Controls tool.
  3. From the secondary tool set, click the Part Offset tool to create an offset zone around selected parts.
    Figure 4.
  4. From the Display Window, rubber-band select all displayed parts.
    The Offset Tool micro-dialog opens.
  5. From the Offset Tool micro-dialog, use the drop-down menu to change the method from Distance to Layers.
  6. Set Layers to 8 and Level to 7.
  7. From the Property Editor, rename the offset by setting the value of General > Name to RL07_Offset.
  8. From the Model Viewer, isolate the Main assembly to show the full vehicle model.